Panasonic Cz Rwsu2u Installation Instructions

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When 1 indoor unit is operated by 2 remote controllers:
ÞEither of the remotes can be set to main/sub.
Wireless Remote ControllerWired Remote Controller
Receiver(Sold Separately)
Remote Control Wiring 
(Field Supply)
Indoor Unitz Use wiring of AWG#20 – AWG#14 for 
 eld supply.
z Use a total wire length of no more than 
1300 ft. Þ(Main)Þ(Sub)
Warnings about Installation of Receivers
z The wireless remote uses a very weak infrared light for its signal, which can result in the signal not 
being received because of the following infl uences, so take care in where the unit is installed.
•  Inverter or rapid-start type fl uorescent lights. (Models without glow lamps)
•  Plasma display or LCD televisions.
•  Direct sunlight or other sources of bright light.
Warnings about Installing Remote Controllers
z If a remote controller is to be operated from a remote control holder that is hung on a wall, turn 
on the lights in the room as well as any electrical appliances and then check to make sure the air 
conditioner works with the remote controller in the location where it will be installed. If it works, 
continue with installation.
z If the air conditioner is to be switched from the main sensor to a remote control sensor, pay attention 
to the following when installing.
•  Locate where no warm or cold drafts will affect it.
•  Locate in a place free from direct sunlight.
•  Locate where it will not be affected by any other heat/cold source.
Customer Explanation
z Give the Operating Instructions and this manual to the customer after fi nishing the installation.
z Use the Operating Instructions to explain to the customer how to use and care for the unit.
Things to remember when wired and wireless remotes are 
installed at the same time
Two remote controllers can be used to control the unit if the wireless remote controller is installed at the 
same time as the wired remote controller.
(Up to 2 remotes [a wireless remote controller and the wired remote controller] can be installed.)
When using 2 remotes, one or more units can be operated by the remotes.
  When wiring remote controllers, be sure to double-check the terminal numbers of the indoor unit before 
connecting them so there are no mistakes in the wiring. (Damage will occur if high voltage [e.g. supply 
voltage] is applied.)
  It is not possible to use more than one wireless remote controller with one indoor unit. (A receiver located 
separately can be used at the same time.)
  If both a wireless and a wired remote controller are to be installed and used at the same time, one of 
them must be set up as the sub remote controller.
z  If the wired remote controller is to be the sub remote, change the wired remote controller to the sub remote.
z  If the wireless remote controller is to be the secondary, turn the #3 switch on the wireless receiver (operation 
panel) from OFF to ON.
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If a group of units are to be controlled by 2 remote controllers;
ÞMain/sub remote controllers will work regardless of which indoor unit they are installed to.
Wireless Remote 
ControllerWired Remote 
Controllerz Use wiring of AWG#20 – 
AWG#14 for  eld supply.
z Make the total wire length 
when cross-wiring a group 
no more than 650 ft.
1st Indoor 
Unit2nd Indoor 
Unit3rd Indoor 
Unit4th Indoor 
Unit Þ(Main)
Þ(Sub) Cross-wiring Remotes for Group 
Control (Field Supply)
DIP Switch 3
CZ-RWSU2U
Installing the Display/Operation Panel

						

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Te s t  O p e r a t i o n
Implementing a Test Run1.  Turn the #1 DIP switch of the operation panel from OFF to ON (Down
àUp) and operate the wireless remote 
controller with its Start /Stop button.
2.  During a test run, all display lamps on the display will light up.
3.  During a test run, it is not possible to adjust the temperature.
4.  After completing a test run, be absolutely sure to turn the #1 DIP switch from ON to OFF (Up
àDown) and 
make sure none of the display lamps are blinking. Also, replace the PCB cover back as it was and fasten it; 
while holding the wiring in the cable clamp, tighten its screw.
DIP Switch Bit 1
  This is hard on the device, so only use this for the test run.
  After turning on the power, the unit will not receive any commands from the remote controller for about 1 
minute. This is not an error. (In fact it does receive signals, but they are cancelled.
£
Setting Address Switches
z When more than one display/operation panel and remote controller are installed in the same room, setting up 
addresses allows them to avoid interfering with each other.
z Refer to the Operating Instructions for information on how to change the addresses of the remote controllers.
Address Display 
on the Remote 
Controller~~~~~~~~~~
Position of 
the Receiver’s 
Address SwitchIt doesn’t matter 
where the receiver’s 
address switch is.
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The Self-Diagnosis Function Display and What is Detected
Alarm Display in the table below indicates the content of alarms that are displayed when a wired remote 
controller is connected. For information on how to deal with the alarms, refer to the Mounting Instructions for 
the indoor unit or to Test Run or servicing materials.
Ô: Off / 
Ó: On / 
Õ: Blinking (0.5 sec. intervals)
Common to All Modelsz  The indoor unit and the wireless remote controller are equipped with 
indoor temperature sensors. The sensing of indoor temperature works 
via one of them.
z  When the unit is shipped, it is set to the indoor unit, but to switch to 
the remote controller, press the sensor button (diagram at right) inside 
the remote controller’s cover and then check to make sure that Main 
Sensor on the LCD screen goes off.
  Even when the sensor switch has been set to the remote 
controller, if the unit does not receive any room temperature 
data from the remote controller for ten minutes, it 
automatically switches back to the indoor unit sensor, so be 
sure to install the remote controller facing the receiver.
Error Detected WL Remote Control LED Display
Alarm Display Run Timer Standby Blinking
Communication error in the remote control 
circuitE01–E03, E08–E14, E17, E18
ÕÔÔ
Communication error either in the in/
outdoor operation line or the sub-bus of 
the outdoor unitE04–E07, E15, E16, E19–E31ÔÔÕ
Operation of indoor protection device P01, P09–P14ÔÕÕAlternately
Operation of outdoor protection device P02–P08, P15–P31
ÕÔÕAlternately
Error in the indoor thermistor F01–F03, F10–F11
ÕÕÔAlternately
Error in the outdoor thermistor F04–F09, F12–F28
ÕÕÓAlternately
Error in the indoor EEPROM F29
ÕÕÔSimultaneously
Error in the outdoor EEPROM F30, F31
ÕÕÓSimultaneously
Error related to the compressor H01–H31
ÔÕÔ
Error in indoor settings L01–L03, L05–L09ÕÔÕSimultaneously
Error in outdoor settings L04, L10–L31
ÕÓÕSimultaneously
Inconsistency in Air/Heat (Including an auto-temp setting for a model without 
auto-temp settings)
ÓÕÕAlternately
Oil Alarm (Same as operation of outdoor protection device)
ÕÔÕAlternately
Test Run
ÕÕÕSimultaneously
Room Temperature Sensor Settings
Sensor Button
Setting Up Remote Control Functions
The functions of the wireless remote can be set on site.
(These settings are saved in nonvolatile memory in the remote controller, so even when its batteries are 
changed, the settings do not revert to the defaults.)
   The operation of the air conditioner can be impacted, depending on the settings made, so only service 
personnel should make the settings.
  Furthermore, making changes to these settings may cause actual operation to deviate from what is 
printed in the Operating Instructions, so be sure to explain this to the customer fully.
Making Settings (Do with unit stopped.)1.  Holding down the Swing/Wind Direction + OFF Timer  + Mode Select buttons at the same time for 4 or more 
seconds makes the display switch to the setting screen. (See Diagram Below.) 
2.  Use the Temperature setting buttons, 
/, to select the number of the item to be set.
3.  Use the ON Timer buttons, /, to change settings.
4.  The settings are saved with the Once/Every Day button. When this is done, the settings display of the LCD 
changes from blinking to light.
5.  If other settings are to be changed as well, repeat steps 2 to 4.
6.  When all settings have been made, press the Start/Stop button.
Example: Operation mode setting screen
Note 1  While the unit is in the swinging mode (Swing/Wind Direction), the  ap cannot be stopped in a desired 
position.
Note 2  When Setting OFF is selected, “°C” is displayed on the LCD screen.
Note 3  You can toggle between ON and OFF by pressing Ventilation for 4 seconds or more.
Note 4  If the Heater Max ON/OFF setting is not changed to EP (ON), the setting change will not be re ected.
Note 5  This is the number of addresses that can be set in the address change mode. Do not set it to 07 or 
above.
Item Number & Setting Item Setting Content Setting when 
Shipped
1
Operation Mode
       
   
2
Flap Display      
3
Select Fan Speed
      
4
Display of Set 
Temperature °F 
 Setting Off (Note 2)  °C °F
5
Time Display AM/PM 
 24 Hour (No Display) AM/PM
6
Ventilation Fan ON/OFF Off (No Display) 
 On OFF (Note 3)
7
Cool temp Max 41 – 95°F 86°F
8
Cool temp Min 41 – 95°F 64°F
9
Heat temp Max 41 – 95°F 78°F 
(Note 4)
10
Heat temp Min 41 – 95°F 60°F
11
Dry temp Max 41 – 95°F 86°F
12
Dry temp Min 41 – 95°F 64°F
13Auto temp Max 41 – 95°F 80°F
14
Auto temp Min 41 – 95°F 62°F
16
Address Setting Max 
Value00 (ALL only) 
 01 – 31 06 (Note 5)
17
Heat temp Max ON/OFF JP (Heater Max Temp Change Off)  
  EP (On)JP
1 4 326
(Note 1) (No Display) 
 (No Display) 
Item 
Number
Installing the BadgeAttach the badge above the display. (See Fig.5.)
Fig. 5
Printed in Japan
85464369521011
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